Dalitz plot analyses of , , and produced via annihilation with initial-state radiation
Here, we study the processes e+e- → γ ISR J/ψ , where J/ψ → π +π-π0, J/ψ → K +K-π0 , and J / ψ → K$$0\atop{S}$$ K ± π ∓ using a data sample of 519 fb-1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at and near the Υ (nS) (n = 2 , 3 , 4) resonances. We measure the ratio of branching fractions R1 = $$B(J/ψ →K^+K^- π^0)\atop{B(J/ψ →π^+π^- π^0)}$$ and R2= $$B(J/ψ →K^0_SK^±π^∓)\atop{B(J/ψ →π^+π^- π^0)}$$. We perform Dalitz plot analyses of the three J/ψ decay modes and measure fractions for resonances contributing to the decays. We also analyze the J/ψ → $π^+π^- π^0$ decay using the Veneziano model. We observe structures compatible with the presence of ρ (1450) in all three J/ψ decay modes and measure the relative branching fraction: R (p(1450)) = $$Bp(1450)→K^+K^-)\atop{B(p(1450)→π^+π^-)}$$ +0.307 ± 0.084 (stat) ± 0.082 (sys).
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- Contributing Organization:
- BaBar Collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1430678
- Journal Information:
- Physical Review D, Journal Name: Physical Review D Journal Issue: 7 Vol. 95; ISSN PRVDAQ; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Partial-wave analysis of J / ψ → K + K − π 0
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journal | August 2019 |
Partial-wave analysis of $J / ψ → K^+ K^− π^0$
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text | January 2019 |
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